In vitro experiments are studies conducted outside of a living organism, typically in a controlled laboratory environment. This usually involves using cells, tissues, or organs in test tubes, petri dishes, or other artificial settings to examine biological processes or responses to certain substances.
In vivo experiments are studies conducted within a living organism, such as animals. These experiments allow researchers to observe the overall effects of a treatment, intervention, or exposure in a complex biological system that includes all the interacting components of a living body.
Synonyms:
in vitro, in vivo